Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan.
Research and Development Center for Smart Textile Technology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei, 106, Taiwan.
Mikrochim Acta. 2021 Feb 27;188(3):102. doi: 10.1007/s00604-021-04758-5.
Metastable and rarely reported GO warped tetragonal phase t-lanthanum vanadate nanocomposites (GO@LaVO-NCs) are reported for the sensitive electrochemical determination of antifungal drug Clioquinol (CQ). The hydrothermal method was adopted for synthesis of GO@LaVO-NCs. The electrochemical performance of CQ was examined using cyclic voltammetry (CV) and differential plus voltammetry (DPV) at GO@LaVO-NCs modified glassy carbon electrode (GCE). The electrocatalytic oxidation of CQ at the GO@LaVO-NCs/GCE shows the highest anodic peak current at a potential of +0.51 V vs. Ag/AgCl. The proposed sensor provides excellent sensitivity of 4.1894 μA μM cm, a very low detection limit (LOD) of 2.44 nM, and a wide range of 25 nM to 438.52 μM towards CQ detection. Finally, the detection of CQ in biological media was successfully done using the GO@LaVO-NCs/GCE and possesses recoveries of 94.67-98.0%.
用于抗真菌药物氯碘羟喹灵敏电化学测定的介稳且罕见报道的 GO 扭曲四方相 t-镧钒酸盐纳米复合材料(GO@LaVO-NCs)被报道。采用水热法合成 GO@LaVO-NCs。在 GO@LaVO-NCs 修饰的玻碳电极(GCE)上,通过循环伏安法(CV)和差分脉冲伏安法(DPV)对 CQ 的电化学性能进行了检测。GO@LaVO-NCs/GCE 上 CQ 的电化学催化氧化在相对于 Ag/AgCl 的+0.51 V 处表现出最高的阳极峰电流。所提出的传感器对 CQ 检测具有出色的灵敏度(4.1894 μA μM cm)、非常低的检测限(LOD)(2.44 nM)和较宽的检测范围(25 nM 至 438.52 μM)。最后,使用 GO@LaVO-NCs/GCE 成功地对生物介质中的 CQ 进行了检测,回收率为 94.67-98.0%。